Abstract
An earlier investigation of the alpha-particle spectrum associated with the beta decay of has been extended to an alpha-particle energy of approximately 3 Mev. The high-energy spectrum appears to indicate a broad level in having an excitation energy of 10.1±0.2 Mev and a width at half-maximum of Mev. The most probable spin and parity assignment for this level is , although cannot be definitely excluded; for the width is approximately the Wigner limit. It is found that (0.13±0.04)% of all decays of lead to this state.
- Received 24 March 1958
DOI:https://doi.org/10.1103/PhysRev.111.567
©1958 American Physical Society